factorX = (double)extImg2[1]/extImg1[1];
factorY = (double)extImg2[3]/extImg1[3];
resample->SetAxisMagnificationFactor(0,factorX);
resample->SetAxisMagnificationFactor(1,factorY);
resample->SetInformationInput(image2);
factorX = (double)extImg2[1]/extImg1[1];
factorY = (double)extImg2[3]/extImg1[3];
resample->SetAxisMagnificationFactor(0,factorX);
resample->SetAxisMagnificationFactor(1,factorY);
resample->SetInformationInput(image2);